ze1$ ze2$ ZGRID COLOR RED [ CURVER 270 30 CURVEL 180 30 CURVER 90 30 ] JT 0 0 ZGRID COLOR RED [CURVER 120 60 CURVEL 120 40 CURVER 120 20 ] JT 0 0 COLOR 1 [ SPIN 4 [ REPEAT 40 [ FD 1000 BK 2000 HOME JT 10 0 ] JT 0 0 ] ]